This Nouns PowerPoint has hyperlinks to errors and corrects. There is no scoring system. If students stay in the program they should not be able to get to the end until its correct. There are great practice questions like 'Choose the one that is a noun, Choose the one that is not a describing word (I.E. noun), etc. I believe all hyperlinks are working. If you need this type of thing for other parts of speech or topics let me know and I will work on it. You may edit this as you want.